PVC涂层织物撕裂破坏机理分析与强度预测模型
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摘要
针对几种常见的PVC涂层织物进行撕裂试验,系统研究了PVC涂层织物膜材的撕裂破坏机理,重点研究了有无涂层材料、开口尺寸、夹持倾角、偏轴角度、拉伸速率等因素的影响,建立了撕裂强度和抗拉强度之间的关系,提出了相应的强度预测模型。结果表明,撕裂强度受材料拉伸强度及试验条件的影响明显,随开口尺寸增大呈线性降低,随夹持倾角的增大而增大,随拉伸速率的增大而减小,且在偏轴45°时撕裂强度达到最大。文中提出的模型能够较好地预测不同受力条件下的PVC涂层织物的撕裂强度。
A series of tearing tests were carried out on several common PVC coated fabrics. The tearing failure mechanism of PVC coated fabrics was systematically studied. This paper focuses on the influences of factors such as coating material, opening size, clamping angle, tensile rate and off-axis angle. Besides, the relationship between tearing strength and tensile strength was established, and a corresponding strength model was proposed. The results show that the tearing strength is significantly affected by the tensile strength of the material and the test conditions. It decreases linearly with the increase of opening size, increases with the increase of clamping angle, and decreases with the increase of tensile rate, and the maximum value is reached when the off-axis angle is 45°. The model proposed in this paper can predict the tearing strength of PVC coated fabric precisely under different conditions.
A series of tearing tests were carried out on several common PVC coated fabrics. The tearing failure mechanism of PVC coated fabrics was systematically studied. This paper focuses on the influences of factors such as coating material, opening size, clamping angle, tensile rate and off-axis angle. Besides, the relationship between tearing strength and tensile strength was established, and a corresponding strength model was proposed. The results show that the tearing strength is significantly affected by the tensile strength of the material and the test conditions. It decreases linearly with the increase of opening size, increases with the increase of clamping angle, and decreases with the increase of tensile rate, and the maximum value is reached when the off-axis angle is 45°. The model proposed in this paper can predict the tearing strength of PVC coated fabric precisely under different conditions.
引文
[1] 陈务军. 膜结构工程设计[M]. 北京:中国建筑工业出版社,2005:1-25. (CHEN Wujun. Design of membrane structure engineering[M]. Beijing:China Architecture and Building Press,2005:1-25. (in Chinese))
[2] 杨庆山,姜忆南. 欧洲张拉薄膜结构结构设计指南[M]. 北京:机械工业出版社,2007: 18-69. (YANG Qingshan,JIANG Yinan. European design guide for tensile surface structures[M]. Beijing: China Machine Press,2007: 18-69. (in Chinese))
[3] ZHANG Yingying, XU Junhao, ZHANG Qilin. Advances in mechanical properties of coated fabrics in civil engineering[J]. Journal of Industrial Textiles, 2016,48(1):255-271.
[4] 武岳,陈昭庆,孙晓颖. 张拉膜结构风致动力灾变研究进展[J]. 哈尔滨工业大学学报, 2017, 49(6):1-9. (WU Yue, CHEN Zhaoqing, SUN Xiaoying. Advances on wind-Induced dynamic disaster of tensioned membrane structures[J]. Journal of Harbin Institute of Technology, 2017, 49(6):1-9. (in Chinese))
[5] 易洪雷,丁辛,陈守辉. 建筑膜材料撕裂强度的测试方法及撕破机理研究[J]. 东华大学学报(自然科学版), 2006, 32(4):119-124.(YI Honglei, DING Xin, CHEN Shouhui. Study on tear testing method and rupture mechanism of architectural membrane materials[J]. Journal of Donghua University, 2006,32(4):119-124. (in Chinese))
[6] 马倩,王萍,王永欣. 机织物撕裂破坏分析及其自身性能对二维纺织复合材料力学性能的重要性[J]. 纤维复合材料, 2010, 27(3):15-19. (MA Qian, WANG Ping, WANG Yongxin. Tearing analysis of woven fabrics and the importance of its mechanical properties to 2D textile composites[J]. Fiber Composites, 2010, 27(3):15-19. (in Chinese))
[7] 储才元,陈峰. 机织物的撕裂破坏机理和测试方法的分析[J]. 纺织学报, 1992, 13(5):4-8. (CHU Caiyuan CHEN Feng. Analysis of tearing failure mechanism and test method of woven fabric[J]. Journal of Textile Research, 1992, 13(5):4-8. (in Chinese))
[8] 膜结构技术规程: CECS 158: 2015[S]. 北京:中国计划出版社,2015. (Technical specification for membrane structures: CECS 158: 2015 [S]. Beijing: China Planning Press, 2015. (in Chinese))
[9] 张营营,许珊珊,徐俊豪,等. 聚四氟乙烯膜材黏弹性本构关系[J]. 建筑结构学报, 2016, 37(6):245-252. (ZHANG Yingying, XU Shanshan, XU Junhao, et al. Viscoelastic constitutive relations of polytetrafluoroethylene coated fabrics[J]. Journal of Building Structures, 2016, 37(6):245-252. (in Chinese))
[10] WANG Ping, SUN Baozhong, GU Bohong. Comparisons of trapezoid tearing behaviors of uncoated and coated woven fabrics from experimental and finite element analysis[J]. International Journal of Damage Mechanics, 2013, 22(4):464-489.
[11] 陈建稳,陈务军,侯红青,等. 织物类蒙皮材料中心切缝撕裂破坏强度分析[J]. 复合材料学报, 2016, 33(3):666-674. (CHEN Jianwen, CHEN Wujun, HOU Hongqing, et al. Analysis on tearing strength of envelope fabric materials under central crack tearing[J]. Acta Materiae Compositae Sinica, 2016, 33(3):666-674. (in Chinese))
[12] ZHANG Yingying, ZHANG Qilin, KUAI Beilei, et al. Experimental analysis of tensile behaviors of polytetrafluoroethylene-coated fabrics subjected to monotonous and cyclic loading[J]. Tetile Research Journal, 2014, 84(3):231-245.
[13] HU Jianhui, GAO Chengjun, HE Shizan, et al. Effects of on-axis and off-axis tension on uniaxial mechanical properties of plain woven fabrics for inflated structures[J]. Composite Structures, 2017, 171:92-99.
[14] ZHANG Diantang, CHEN Li, WANG Yanjie, et al. Bias tensile strength behaviors of woven fabric: theoretical and experimental[J]. Journal of the Textile Institute, 2017, 108(10):1-9.
[15] 刘龙斌,吕明云,肖厚地. 含初始裂纹的平流层飞艇用蒙皮薄膜撕裂行为[J]. 复合材料学报, 2015:32(2):508-514. (LIU Longbin, LV Mingyun, XIAO Houdi. Tearing behaviors of envelop thin films used in stratospheric airshios with initial cracks[J]. Acta Materiae Compositae Sinica, 2015,32(2):508-514. (in Chinese))
[16] LIU Longbin, LV Mingyun, XIAO Houdi. Tear strength characteristics of laminated envelope composites based on single edge notched film experiment[J]. Engineering Fracture Mechanics, 2014, 127:21-30.
[2] 杨庆山,姜忆南. 欧洲张拉薄膜结构结构设计指南[M]. 北京:机械工业出版社,2007: 18-69. (YANG Qingshan,JIANG Yinan. European design guide for tensile surface structures[M]. Beijing: China Machine Press,2007: 18-69. (in Chinese))
[3] ZHANG Yingying, XU Junhao, ZHANG Qilin. Advances in mechanical properties of coated fabrics in civil engineering[J]. Journal of Industrial Textiles, 2016,48(1):255-271.
[4] 武岳,陈昭庆,孙晓颖. 张拉膜结构风致动力灾变研究进展[J]. 哈尔滨工业大学学报, 2017, 49(6):1-9. (WU Yue, CHEN Zhaoqing, SUN Xiaoying. Advances on wind-Induced dynamic disaster of tensioned membrane structures[J]. Journal of Harbin Institute of Technology, 2017, 49(6):1-9. (in Chinese))
[5] 易洪雷,丁辛,陈守辉. 建筑膜材料撕裂强度的测试方法及撕破机理研究[J]. 东华大学学报(自然科学版), 2006, 32(4):119-124.(YI Honglei, DING Xin, CHEN Shouhui. Study on tear testing method and rupture mechanism of architectural membrane materials[J]. Journal of Donghua University, 2006,32(4):119-124. (in Chinese))
[6] 马倩,王萍,王永欣. 机织物撕裂破坏分析及其自身性能对二维纺织复合材料力学性能的重要性[J]. 纤维复合材料, 2010, 27(3):15-19. (MA Qian, WANG Ping, WANG Yongxin. Tearing analysis of woven fabrics and the importance of its mechanical properties to 2D textile composites[J]. Fiber Composites, 2010, 27(3):15-19. (in Chinese))
[7] 储才元,陈峰. 机织物的撕裂破坏机理和测试方法的分析[J]. 纺织学报, 1992, 13(5):4-8. (CHU Caiyuan CHEN Feng. Analysis of tearing failure mechanism and test method of woven fabric[J]. Journal of Textile Research, 1992, 13(5):4-8. (in Chinese))
[8] 膜结构技术规程: CECS 158: 2015[S]. 北京:中国计划出版社,2015. (Technical specification for membrane structures: CECS 158: 2015 [S]. Beijing: China Planning Press, 2015. (in Chinese))
[9] 张营营,许珊珊,徐俊豪,等. 聚四氟乙烯膜材黏弹性本构关系[J]. 建筑结构学报, 2016, 37(6):245-252. (ZHANG Yingying, XU Shanshan, XU Junhao, et al. Viscoelastic constitutive relations of polytetrafluoroethylene coated fabrics[J]. Journal of Building Structures, 2016, 37(6):245-252. (in Chinese))
[10] WANG Ping, SUN Baozhong, GU Bohong. Comparisons of trapezoid tearing behaviors of uncoated and coated woven fabrics from experimental and finite element analysis[J]. International Journal of Damage Mechanics, 2013, 22(4):464-489.
[11] 陈建稳,陈务军,侯红青,等. 织物类蒙皮材料中心切缝撕裂破坏强度分析[J]. 复合材料学报, 2016, 33(3):666-674. (CHEN Jianwen, CHEN Wujun, HOU Hongqing, et al. Analysis on tearing strength of envelope fabric materials under central crack tearing[J]. Acta Materiae Compositae Sinica, 2016, 33(3):666-674. (in Chinese))
[12] ZHANG Yingying, ZHANG Qilin, KUAI Beilei, et al. Experimental analysis of tensile behaviors of polytetrafluoroethylene-coated fabrics subjected to monotonous and cyclic loading[J]. Tetile Research Journal, 2014, 84(3):231-245.
[13] HU Jianhui, GAO Chengjun, HE Shizan, et al. Effects of on-axis and off-axis tension on uniaxial mechanical properties of plain woven fabrics for inflated structures[J]. Composite Structures, 2017, 171:92-99.
[14] ZHANG Diantang, CHEN Li, WANG Yanjie, et al. Bias tensile strength behaviors of woven fabric: theoretical and experimental[J]. Journal of the Textile Institute, 2017, 108(10):1-9.
[15] 刘龙斌,吕明云,肖厚地. 含初始裂纹的平流层飞艇用蒙皮薄膜撕裂行为[J]. 复合材料学报, 2015:32(2):508-514. (LIU Longbin, LV Mingyun, XIAO Houdi. Tearing behaviors of envelop thin films used in stratospheric airshios with initial cracks[J]. Acta Materiae Compositae Sinica, 2015,32(2):508-514. (in Chinese))
[16] LIU Longbin, LV Mingyun, XIAO Houdi. Tear strength characteristics of laminated envelope composites based on single edge notched film experiment[J]. Engineering Fracture Mechanics, 2014, 127:21-30.